There are over 4,200 religions in the world, most with their own holy books which followers of those religions usually regard as the divine revelations of some one person or more than one person. (That person or those persons are sometimes known, and sometimes not.) 
 
Scholars have documented the history as to how some of those holy books containing somebody\'s or somebodies\' \"divine revelations\" came into being in their current forms sometimes after selections from different documents, additions/deletions, interpretations, translations/mistranslations by many known/unknown people. 
 
With regard to the Bible, the Bibles of Protestant Churches, Roman Catholic Church, Eastern Catholic Church, Eastern Orthodox Church, Oriental Orthodox Church, and LDS Church are different. \"The Tanach\" --the holy book of Judaism-- is different from the Old Testaments of Christian Churches; and the Old Testaments (and New Testaments) of Christian Churches too are not the same.